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Finding the Fourth Proportional to 61,038.25, 91,557.95 and 21,602.05

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Solution

The fourth proportional to 61,038.25, 91,557.95 and 21,602.05 is: 32,403.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,038.25 : 91,557.95 = 21,602.05 : x
  2. Step 2: Convert to fraction form
    61,038.25/91,557.95 = 21,602.05/x
  3. Step 3: Cross multiply
    61,038.25x = 91,557.95 × 21,602.05
  4. Step 4: Simplify right side
    61,038.25x = 1,977,839,413.80
  5. Step 5: Solve for x
    x = 1,977,839,413.80/61,038.25
  6. Step 6: Final answer
    x = 32,403.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.